Atheros AR9462 WiFI very unstable & package loss

Solution 1:

Looks like a bug in network manager. Bug

Run this command in the terminal:

sudo gedit /etc/NetworkManager/system-connections/essid  

Where it says essid in the command above type the name of your wireless network. A file should open then enter your user password change the line "system-ca-certs=true" to "system-ca-certs=false" save and close gedit or whatever text editor you are using, then reboot.

Then connect as you normally do using network manager.

Also some people say just removing "system-ca-certs=true" from the file worked for them but a few people reported that the file recreates itself on reboot that is why I suggest changing true to false instead of removing the line completely.

If you are not using gedit as your text editor in the command above type the name of the editor you are using in place of gedit.

Solution 2:

I have an Acer V5-131 with an AR9462. It worked for some access points but cut out/reconnected on others. This is the line in /etc/modprobe.d/ath9k.conf that fixed it for me:

options ath9k nohwcrypt=1 blink=1 btcoex_enable=1

Good luck.

Solution 3:

options ath9k nohwcrypt=1 blink=1 btcoex_enable=1

instead of

options ath9k nohwcrypt=1 

in /etc/modprobe.d/ath9k.conf

Work like a charm for Acer Aspire S3-391

Solution 4:

Could not get my AR9462 wireless working correctly without drops after thirty minutes with the suggestions above on an ASUS X201E that came with 12.04 on any kernel after 3.2.0-54.

Finally stumbled upon this and updated my kernel to 3.12.2-031202-generic and everything works great. If you install this and it doesn't work you can roll back to the previous kernel at boot. How to here: http://www.unixmen.com/linux-kernel-3-12-2-available-download-installation-instructions-ubuntu-linux-mint/

Solution 5:

Changing my router channel to 1 fixed exactly this problem for my AR9462 wireless. None of the ath9k options had any effect.